How to figure out *correct* tire size for wheels.

neilol · 07-03-2010, 10:21 AM

Getting some 18x8.5 front 18x9 rear. What is the best way to find the right tire size? From what I understand from reading here it is basically an acceptable range of widths that will fit without stretching. How big is this threshold?

remmib · 07-03-2010, 12:22 PM

OEM size is 225/40/18 and 255/35/18. But since you've got half an inch wider wheels, 235/40 and 265/35 might be a better size.

07-03-2010, 10:21 AM	#1
neilol Enlisted Member 31 Rep 46 Posts Drives: M2 Join Date: Jan 2010 Location: Rhode Island iTrader: (0)	*How to figure out correct* tire size for wheels.** Getting some 18x8.5 front 18x9 rear. What is the best way to find the right tire size? From what I understand from reading here it is basically an acceptable range of widths that will fit without stretching. How big is this threshold?
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07-03-2010, 12:22 PM	#2
remmib General 1569 Rep 29,202 Posts Drives: 2013 F10 520d M-Sport Join Date: Feb 2006 Location: Norway iTrader: (0)	OEM size is 225/40/18 and 255/35/18. But since you've got half an inch wider wheels, 235/40 and 265/35 might be a better size. __________________ F10 520d M-Sport Alpine White \| HRE P43SC 20x9+20x11 \| Michelin PSS 255/35+295/30 \| KW V3 Coilover \| M5 Front Sway Bar + M550d Rear Sway Bar \| 3DDesign Front Lip \| BMW M Performance CF Spoiler \| BMW M Performance Diffuser \| BMW M Performance Black Grills \| BMW M Performance Pedals \|
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